Heney b



(No Model.)

H. B. DEXTER CARD BOARD.

Patented Nov. 8, 1887.

Array-1 I I v w w w. u m a m a I N a m k n w u a I J I Q m H n I n h u u a n m 1 FIGE.

INVENTUH.

WITNESSES- Maia? UNITED STATES PATENT EErcE.

HENRY B. DEXTER, OF PAWTUOKET, RHODE ISLAND, ASSIGNOR TO THE RHODE ISLAND CARD-BOARD COMPANY, OF SAME PLACE;

CARD-BOARD.

SPECIFICATION forming part of Letters Patent No. 372,971, dated Novem Application filed June 19, 1886.

To all whom it may concern:

Be it known that I, HENRY B; DEXTER, a citizen of the United States, residing at Pawtncket, in the county of Providence and State of Rhode Island, have invented a new and useful Improvement in Card-Board; and I do hereby declare the following specification, taken in connection with the accompanying drawings forming a part of the same,-to be a description thereof.

This invention consists in a card-board or pasteboard, composed of several layers or sheets pasted or cemented together, the interior layer of which has incorporated or combined therewith animal hair, in a whole state, the said'interior layer being covered on both sides by'layers or sheets which are attached thereto and seolude the interior layer from view, render the exterior of the board smooth, and give said exterior a finished appearance. 1n the accompanying drawings, Figure 1 shows in perspective a piece of card-board embodying the invention, with the three layers composing the same exposed to view. Fig. 2 represents a transverse section of the same. The interiorlayer, A, of the card-board is made from pulp or material usually employed in the manufacture of paper,.and there is com bined therewith animal hair, a, in a whole state, the said hair, being introduced intothe pulp during the manufacture of the layer or sheet A, so as to be thoroughly incorporated with said pulp and bind the mass together. The layer A, so composed, is covered on one side by a layer'or sheet, B, and on the other side by a layer or sheet, 0, both of ordinary paper, which sheets or layers are pasted or cemented to the layer A, thereby secluding such interior layer from View, rendering the Serial No. 205,672. (No model.)

surface of the board smooth and board a finished appearance.

The incorporation or combination of hair in a whole state with the pulp or material mainly composing the layer or sheet A, binds such material more firmly together and makes the layer more cohesive, thereby rendering a cardboard having a layer so composed much stronger, firmer, and more durable than it otherwise would be, besides enabling the pulp or material mainly composing such layer to be ofa cheaper-quality than ifthe invention were not employed.

The advantages of hair to combine with the paper-pulp are that hair being fine and smooth it will more intimately combine with the pulp than other materials that have been usedsuch as cotton,wool, and silk-so that the surface of the board will be smoother than when threads or yarns are used. In the manufacture of the pulp having hair therein, the hair will distribute itself more uniformly through the pulp than threads or yarns would, and the hair pulp will ,fiow more freely and evenly out upon the screens without tendency to lump or mass thus making a more even and smooth board.

What I claim as my invention, and desire to secure by Letters Patent, is-

As an improved article of manufactu re, cardboard composed of an interior layer having hair incorporated therein and exterior layers secured to said interior layer and covering the same from View, substantially as described.

' HENRY B. DEXTER.

giving the Witnesses:

EDSON SALISBURY J ONES, HENRY J. STAPLE'roN.

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